Polling shows Trump’s approval rating has dipped into the 30s and House Democrats have a double-digit advantage over Republicans among likely voters in the generic ballot. A recent FiveThirtyEight forecast projects Democrats have an almost 83 percent chance of winning back the House in the midterms.

But Yoho and other House GOP lawmakers are putting on a brave face, arguing that the strength of the economy will be enough to stave off a blue wave on Election Day.

He also likened the current political climate to the 1998 midterms, when Republicans failed to pick up seats even though the Clinton administration was mired in scandal. Many Democrats then attributed their surprising midterm victory to the booming economy.

"Every day we get new, stronger economic numbers from the work that we've done here,” said McCarthy, who is running to be the next Speaker if the House stays in GOP hands. “I still believe it's results versus resistance. So, I just wish we didn't have as many retirements."

“We're going to be campaigning not only on the results that we've delivered for the American families but what Pelosi wants to do in reversing the tax cuts and abolishing ICE [Immigration and Customs Enforcement] and radical policies that don't mesh with middle-class families,” Scalise said in a brief interview with The Hill.

Asked twice about the president’s allegations, Upton replied that he had not seen the comments because he had been busy marking up a half-dozen bills in his committee and preparing for a floor speech.

“I’ve been in a markup. I have not followed them at all,” Upton told The Hill. “I don’t know what he said or what the context was.”

Despite the strong economy, some Republican operatives fear it won’t be enough to save the GOP this fall. With the party facing historic headwinds and a fired-up Democratic base, some strategists are concerned the growing deficit and parts of the tax cuts could prove problematic in certain swing districts.

GOP strategist Liz Mair suggested that many Republican voters won’t turn out in November to say “thank you” to Trump.

"They have to have something that is an offer as a future prospect for them to justify voting for people,” she said.

It’s unlikely that endangered Republicans in districts hit by changes to the state and local tax deduction will be touting the 2017 tax law as a success, Mair said.

“Tax reform obviously hasn't been uniformly great for everybody,” she said. “If you're in California, Illinois, New York or New Jersey, there's a very high probability that you don't want to say ‘thank you’ anyway," said Mair, a former spokeswoman for the Republican National Committee. "You probably want to say ‘F-you very much’ — so that's a problem."

Rep. Gus Bilirakis (R-Fla.), who is facing a formidable challenge from former prosecutor and FBI agent Chris Hunter this fall, said there are decent odds that Democrats take back control of the House.

"Well, we’ve got to work hard, and it's going to be tough,” Bilirakis conceded. “It's probably 50-50 right now.”

“Historically in the first term of a president, the majority party loses seats,” he said, “so we've just got to work hard and show the American people what we've done.”